/**
* krbtree_modulate_prio()
* modulate/perturb the priority of the current thread
* by some random amount. It might be useful to convert
* some processes to RT priority as well.
*/
int krbtree_modulate_prio(void){
struct sched_param prio;
unsigned int randval;
if(modulate_priority){
randval = get_osa_random()%50;
if(randval > 40){
/* turn the thread into a real time process */
prio.sched_priority = SCHED_RR;
sys_sched_setscheduler(0,(randval*11)%99,&prio);
return 0;
}
/* just change the process priority, leaving
* it with it's current scheduler. */
randval -= 20;
sys_setpriority(PRIO_PROCESS,0,randval);
return 0;
}
// Don't modulate priority
/* turn the thread into a real time process at highest priority*/
prio.sched_priority = SCHED_RR;
sys_sched_setscheduler(0,99,&prio);
return 0;
}
static void restore_sched_info(struct rst_sched_param *p)
{
struct sched_param parm;
pr_info("Restoring scheduler params %d.%d.%d\n",
p->policy, p->nice, p->prio);
sys_setpriority(PRIO_PROCESS, 0, p->nice);
parm.sched_priority = p->prio;
sys_sched_setscheduler(0, p->policy, &parm);
}
long compat_sys_setpriority(u32 which, u32 who, u32 niceval)
{
/* sign extend which, who and niceval */
return sys_setpriority((int)which, (int)who, (int)niceval);
}
long compat_sys_setpriority(u32 which, u32 who, u32 niceval)
{
return sys_setpriority((int)which, (int)who, (int)niceval);
}